Rules for Tools/I-O Crashes
Disk I/O or printf() crash from Tool window:
Because your Tool's edit routine is called from within a Task and not a DOS Process, it
can't do any IO. For Disk I/O, use the Bars&Pipes library routine `doscall()'.
`printf()' still won't work because `toolstart.o' doesn't set up `stdout'. Open a file
called `"*"', which directs all output to the CLI and use `fprintf()' to write to it.
For this to work, you must run Bars&Pipes from the CLI. Remember to call `fopen()',
`fprintf()', and `fclose()' with `doscall()'.