Aitoff: This item generates a polyconic projection of the entire Earth's surface. It features equidistant spacing of parallels, and was first described in 1889. The center of the view will be at the currently-selected center point. Boundaries: These six toggle switches indicate which items are to be included in the maps, namely: coastlines, country boundaries, U.S. state boundaries, islands, lakes and rivers. A checkmark by an item indicates that the item is to be included. Boundary Colors: These items allow the user to select the color in which each boundary item will be drawn. Each boundary item (e.g., coastlines, lakes, etc.) may be drawn in a different color. Box: This item generates a "flat" map of any portion of the Earth's surface that lies inside a user-selectable rectangular region on a flat or Mercator map. If a flat map is not currently being displayed, then a flat map is first displayed. The user selects the rectangular region by first pressing the left mouse button to select one vertex of the rectangle, dragging the mouse to define the box, then releasing the left mouse button when the desired area has been selected. The user may also cancel this entire selection by pressing the right mouse button before initially pressing the left mouse button. Note that, if the selection is canceled, then the center point for subsequent selections will be at 0 degrees latitude and 0 degrees longitude unless the user selects another center point. Box Zoom In: This item may only be used after the user has previously selected either the Box, Box Zoom In or Box Zoom Out items. This item allows the user to select a rectangular box within the currently-displayed box for closer inspection, thereby further expanding the view of that smaller box. The smaller box is selected as described in the Help entry for the Box item. The user may cancel this selection by pressing the right mouse button before initially pressing the left mouse button. Box Zoom Out: This item may only be used after the user has previously selected either the Box, Box Zoom In, or Box Zoom Out items. Selecting this item causes the limits (both latitude and longitude) of the currently-displayed box to be increased by a factor of 2, and all regions within that larger box are then displayed. Clear Screen: This item causes the entire screen to be cleared to the default background color (blue). Detail Level: This item indicates how much detail the maps are to include (e.g., high, low, etc.). The more detail, the more time required to draw the maps. Display Center: This item displays in the title bar the current values for the latitude and longitude of the center of the map. Draw Line: This item allows the user to draw a connected line by first pressing and holding down the left mouse button, and then moving the mouse while continuing to hold down the left mouse button. Releasing the left mouse button terminates the line drawing function. The user may cancel this selection by first pressing the right mouse button before pressing the left mouse button. Flat: This item generates a simple, "flat" map of the entire Earth's surface. This map features equidistant spacing of parallels. Also known as a cylindrical equidistant projection, it is attributed to Anaximander, c. 550 B.C. The center of the view will be at the currently-selected center point. Flood Color: This item allows the user to select the color to be used in color-filling regions. The color is selected by releasing the right mouse button over the desired color. The currently-selected color is indicated by a check mark. Flood Fill: This item causes a contiguous area to be color filled. Pressing the left mouse button results in the area underneath the mouse being color-filled with the color selected for color-filling (see the Help entry for the Flood Color item). The color of all contiguous points of the same color as the point under the mouse is changed to the flood-fill color. The user may cancel this item by pressing the right mouse button. Gall: This item generates Gall's stereographic cylindrical projection of the entire Earth's surface. This projection was first described in 1855. The center of the view will be at the currently-selected center point. Globe: This item generates a plot of an entire hemisphere of the Earth's surface, i.e., that part of the globe that would be visible if seen from infinitely far away, but with a very powerful telescope. The center of the view will be at the currently-specified center point. This is more commonly called an orthographic projection, and is attributed to Apollonius, c. 240 B.C. Grid: This item generates grid lines on the type of map currently being displayed. The only maps on which grid lines may not be drawn are the box, box-zoom-in, and box-zoom-out maps. Hammer-Aitoff: This item generates a Hammer-Aitoff projection of the entire Earth's surface. It is an equal-area, polyconic projection with decreasing separation of parallels. It was first described in 1892. The center of the view will be at the currently-selected center point. Help: Selecting this item results in a window appearing, with a gadget labelled for each menu item. Pressing the left mouse button on a particular gadget results in a display of the Help entry for that particular menu item. Pressing the left mouse button on the OK gadget terminates the display of the Help entry for that menu item. Pressing the left mouse button on the Exit Help gadget terminates the Help function. Lambert: This item generates a Lambert cylindrical equal-area projection of the entire Earth's surface. This projection was first described in 1772. The center of the view will be at the currently-selected center point. Line Color: This item allows the user to select the color to be used for drawing lines. The color is selected by releasing the right mouse button over the desired color. The currently-selected color is indicated by a check mark. Mercator: This item generates a standard Mercator projection of the entire Earth's surface. This projection was used by Mercator in 1569, and described by Wright in 1599. The center of the view will be at the currently-selected center point. Mollweide: This item generates a pseudo-cylindrical, equal-area projection of the entire Earth's surface. It is attributed to Mollweide, was first described in 1805, and features decreasing separation of parallels. The center of the view will be at the currently-selected center point. New Center: This item allows the user to select a point to be the center of subsequent maps. If the map currently displayed is not a flat map, then a flat map is blittered onto the screen. A grid is displayed, and the user may either select a new center point by pressing the mouse select button over the desired point or cancel the item by pressing the right mouse button. Orbital: This item generates a plot of the Earth's surface as seen from a user-selectable altitude. The center of the view will be at the currently-specified center point. A requester is presented which prompts the user to enter an altitude from which to view. Note that the entire visible portion of the Earth's surface is plotted, no attempt being made to clip the visible portion to a user's hypothetical window as seen from an orbiting spacecraft. This results in a sort of "fish-eye" effect, but it does show the entire portion of the globe visible from that altitude. Palette: This item gives the user full control over the entire palette. A window is opened showing the current palette, slider bars and RGB values which can be directly modified. Any or all colors may be modified, the resulting color changes being immediately reflected on the screen. Print Map: This item causes the currently-displayed map to be printed on the printer specified in the user's standard Amiga Preferences file. Quit: This item causes the program to clean up after itself and terminate. Recenter: This item causes the center point of subsequent maps to be at 0 degrees latitude and 0 degrees longitude. Redraw: This item causes the last map drawn to be redrawn. This is useful, for example, when one changes the detail level and wants to see the same map drawn at the new detail level. Reset Colors: This item causes the default palette (and NOT the user's personal palette in the "drawmap.config" file) to be loaded. The colors on the displayed screen are immediately modified. Sanson-Flamsteed: This item generates a pseudo-cylindrical, equal-area projection of the entire Earth's surface. It is attributed to Sanson and Flamsteed, was first described in 1606, and features equidistant separation of parallels. The center of the view will be at the currently-selected center point. Save Config: This item causes the user's palette to be saved into a file named "drawmap.config". When the program is next executed, it looks for this file and, if found, loads the palette contained therein. Save Map: This item allows the user to save to disk the currently-displayed map. A file requester is first displayed as a prompt to the user to select a file name, after which the map is saved as a standard IFF file. It may then be displayed by any well-behaved IFF display program or loaded into any normal paint program. Shadow: This item causes drop-shadows to be generated on the currently-displayed map. The only colors for which shadows are not generated are "black" and the background "blue". Simple Polyconic: This item generates a simple polyconic projection of the entire Earth's surface. It features equidistant spacing of parallels, and was first described in 1855. The center of the view will be at the currently-selected center point. Slide: This item allows the user to select a point on the equator to be the center of subsequent maps. If the map currently displayed is not a flat map, then a flat map is blittered onto the screen. A grid is displayed, and the user may either select a new center point by pressing the mouse select button over the desired point or cancel the item by pressing the right mouse button. The selected center point is then constrained to lie on the equator by forcing the latitude to zero. Text: This item allows the user to enter text and place it anywhere on the screen. A text requester is displayed, into which any desired text may be entered. Pressing the "return" or "enter" key terminates the requester, and a box (of size equal to the size of the specified text) is displayed at the mouse position. The user then positions the text by moving the mouse. Pressing the left mouse button stamps down the specified text onto the currently-displayed map. Pressing the right mouse button cancels the selection (i.e., no text will be stamped down). Text Color: This item allows the user to select the color to be used for user-specified text. The color is selected by releasing the right mouse button over the desired color. The currently-selected color is indicated by a check mark. Toggle Title: This item causes the screen title bar to be alternately turned on or off. Zoom In: This item generates an Orbital view as seen from one-half the previous orbital altitude. The center of the view will be at the currently-selected center point. If no previous Orbital view had been generated, then the altitude is one-half the initial, default altitude of 300 kilometers. The user may cancel this item by pressing the right mouse button. Zoom Out: This item generates an Orbital view as seen from twice the previous orbital altitude. The center of the view will be at the currently-selected center point. If no previous Orbital view had been generated, then the altitude is twice the initial, default altitude of 300 kilometers. The user may cancel this item by pressing the right mouse button. Exit Help: This selection terminates the Help function.