If you want to define your own custom icons for marks and waypoints, you can draw the icon in an image editor, save it as a file, and add it to Memory-Map Navigator. The icon is then available for you to select for marks and waypoints. You can define part of the icon that can have it's color changed, and you can define the pixel offset that locates the icon on the map.
The suggested size is 32 by 32 pixels
The recommended format is PNG, 32-bit RGB with transparency
The name of the icon in the Waypoint symbol list is taken from the name of your image file.
The name of the colorized part of the image is the same file name with "_c". For example you can have a file called
Flag.png (Note that this part of the image is not affected by the color selection and is always drawn as-is.
Flag_c.png (This part of the image has it's hue replaced with the color selection and is drawn on top of the base image)
The pixel offset file is a text file with the suffix _xy.txt added to the basename.
Flag_xy,txt (Contains 3,24 the x and y coordinates of the base of the flagstaff. The Y coordinate is measured down from the top)
The built-in Icons files are available as a sample or for you to modify: The are in C:\Program Files (x86)\Memory-Map\Navigator-6\Icons
When you have created your icon bitmap, run Memory-Map Navigator and click the Overlay / Icons menu command.
Click the Add... button and browse in your image file.
Click Close, then open the Properties dialog for a mark. Scroll down in the symbols list and you should see your icon at the bottom of the list.
To remove an icon, select it from the list and click Remove. All marks and waypoints that were using the icon revert back to the standard blue dot.
Click Close when you are finished adding / removing icons.
You can also load icons and marks from a comma-separated text (CSV) file. See Import and Export.
Note that a GPX file only contains the name of the icon. The graphic image is not saved in a GPX file.