http://www.slax.org/forum/viewtopic.php?t=17342
In the 5.1.8.1 version of Slax, I used "configsave/configrestore" commands to save any changes made to the file system in my USB flash. Those commands worked like a charm! I noted that on Slax 6 RC3, those commands were removed. So, after some research, I find out that I could use "changes=slaxsave.dat" to save some changes made in my USB flash Slax.
But the problem is that I didn't get it to work!