Aside from these bugs, however, it is a generally good program. Another all around good program is xpaint. The program is slightly flaky. Another program that creates bitmap is in sipb. It lacks several important features, like Zoom and Undo, but it tends to work on most machines, and should be fine for small bitmaps.
Most programs are also self-obvious when it comes to their various features.
Play around and experiment if you're not sure what something does. Don't forget to save your bitmap in your home directory. Some people end the bitmap names with .xbm , but this is not necessary. Bitmap programs that lack UNDO should be avoided for this reason. To make darker or lighter greys, add more black or white squares in a consistent, regular fashion.