ATB_ (FWEB)

5.5 Control codes b–z

• ‘`@b`’: Insert a breakpoint command
• ‘`@c`’: Set language to C
• ‘`@c++`’: Set language to C++
• ‘`@D`’: Define outer macro
• ‘`@d`’: Define outer macro, and mark
• ‘`@E`’: Treat next identifier as ordinary expression (FWEAVE)
• ‘`@f`’: Format identifier or module name
• ‘`@i`’: Include file (unconditional)
• ‘`@I`’: Include file (conditional)
• ‘`@K`’: Extract global RCS-like keyword
• ‘`@k`’: Access local RCS-like keyword
• ‘`@L`’: Set language
• ‘`@l`’: Specify limbo text
• ‘`@M`’: Define FWEB macro
• ‘`@m`’: Define FWEB macro, and mark
• ‘`@N`’: Turn on N mode
• ‘`@n`’: Set language to FORTRAN–77
• ‘`@n9`’: Set language to FORTRAN–90
• ‘`@O`’: Open output file (global scope)
• ‘`@o`’: Open output file (local scope)
• ‘`@q`’: Turn off module and line info locally
• ‘`@R`’: Treat next identifier as integer-like reserved
• ‘`@r`’: Set language to RATFOR–77
• ‘`@r9`’: Set language to RATFOR–90
• ‘`@u`’: Undefine outer macro
• ‘`@v`’: Overload operator
• ‘`@W`’: Overload identifier
• ‘`@x`’: Terminate ignorable material, or begin material to be changed
• ‘`@y`’: Begin change material
• ‘`@z`’: Begin ignorable material, or terminate change

5.5.1 ‘`@B`’: Suppress insertion of breakpoint command

This is for detailed debugging of FWEB codes. It inserts a left brace and suppresses the insertion of a breakpoint command. See the discussion of ‘@b’ in ATb.