next
Continues running the program by executing the next source line in the current stack frame, and then stops.
Syntax
n[ext]
Usage
The next command
allows you to execute your program one line of source code at a time.
The next command is similar to step, but
function calls that appear within the line of code are executed without
stopping.  When the next line of code at the original stack level
that was executing when you gave the next command
is reached,  execution stops. 
After reaching a breakpoint,
the next command can be used to examine a troublesome
section of code more closely.
Example
(fgldb) next
5 call addlist()
(fgldb) next
6 call addname()
(fgldb)