The icon of the executable files of SMath viewer and the one of the files of SMath are the same, which makes it difficult to differentiate them, especially when, as a general rule, both have the same name. Adding some additional element to the icon that is saved in the SMath viewer .exe file would make it easier to differentiate them. Most of us also have windows explorer configured to hide the file extensions.

Best regards.
Alvaro.

Nice idea,

Even I always enable extension show option, sometimes
it is hard to detect file I look at first glimpse.