some problems during using debug

[seismic]

These days i am writting a CWP/SU program .
when i debug , i have some questions.
1. i used F7 to debug,but every time debugger stopped when it goes a lib fuction of SU, "requestdoc(0);"
2. i step into a son-function,and press F7,and it will step into a 1000-times loop.
    i don't want to do the loop.
i don't konw how to do ,please help me. Thank you .

[Pecan]

http://www.sci.brooklyn.cuny.edu/~goetz/codeblocks/codeblocks-instructions.pdf

See "Run to Cursor"