Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

/ALIGNADDR

Use /ALIGNADDR to set the address alignment for segments.

The alignment factor determines where segments in the .EXE or .DLL file start. From the beginning of the file, the start of each segment is aligned at a multiple (in bytes) of the alignment factor. The alignment factor must be a power of 2, from 512 to 256M.

Default: /ALIGNADDR:0x00010000

Abbreviation: /ALIGN

Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide