Well, in Axe, >Dec says to display a nubmer in decimal format.  Otherwise, it will use the variable as a pointer and display random gibberish from that point in memory to the next zero.  Also, >Frac will display the character represented by the variable.  For instance:
65->X
Disp X  // Displays everything from 0x00041h (hex) to the next zero
Disp X>Dec // Displays 5
Disp X>Frac // Displays "a"

Hmm, tutorial...
I don't think so.  But it is getting pretty late here, I'll whip one up tomorrow.

The documentation HTML file explains each commands if you didn't check it yet. However, it doesn,t go in full depth for all commands yet, so it can still be confusing, especially pointers and data management.