AT Prefix command (full-screen mode)

Sets a statement breakpoint when you issue this command through the Source window prefix area. When one or more breakpoints have been set on a line, the prefix area for that line is highlighted.

Read syntax diagramSkip visual syntax diagramATinteger;
integer
Selects a relative statement (for C, C++, and PL/I) or a relative verb (for COBOL) within the line. The default value is 1. For optimized COBOL programs, the default value is the first executable statement on the line, which was not discarded due to optimization effects.

Usage note

The AT Prefix command cannot be used while you replay recorded statements by using the PLAYBACK commands.

Example

Set a breakpoint at the third statement or verb in the line (typed in the prefix area of the line where the statement is found). 
AT 3
No space is needed as a delimiter between the keyword and the integer; hence, AT 3 is equivalent to AT3.

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