Typewriting Mode

Am using windows XP and the typewriting mode which was working well has stopped after a few days
I tried clearing the ticks in the boxes and then restating the program and re-ticking them still will not work. Tried again same procedure after restarting the computer.
Will try again
Grandad7

woke up this morning and switched everything on and hey presto the typewriter mode is working fine again. Why I have no idea