break
Sets a breakpoint at the specified line or function.
Syntax
b[reak] { line | module:line | function }
- line is a source code line in the current module.
 - module:line is a source code line in a specific module.
 - function is a function name.
 
Usage
The break command sets a breakpoint at a given position in the program.
When the program is running, the debugger stops automatically at breakpoints defined by this command.
Example
(fgldb) break mymodule:5 
Breakpoint 2 at 0x00000000: file mymodule.4gl, line 5.