The AIX assembler supports a free-line format for source lines, which does not require that items be in a particular column position.
For all instructions, a separator character (space or tab) is recommended between the mnemonic and operands of the statement for readability. With the AIX Version 4 assembler, Branch Conditional instructions need a separator character (space or tab) between the mnemonic and operands for unambiguous processing by the assembler. (See "Migration of Branch Conditional Statements with No Separator after Mnemonic" for more information.)
The assembler language puts no limit on the number of characters that can appear on a single input line. If a code line is longer than one line on a terminal, line wrapping will depend on the editor used. However, the listing will only display 512 ASCII characters per line.
Blank lines are allowed; the assembler ignores them.
The atof subroutine.
The .comm pseudo-op, .csect pseudo-op, .double pseudo-op, .dsect pseudo-op, .float pseudo-op, .lcomm pseudo-op, .tc pseudo-op, .toc pseudo-op, .tocof pseudo-op.