Reference/!else

!else

[if|ifdef|ifndef|ifmacrodef|ifmacrondef [...]]

This command allows to easily insert different code when different defines or macros are set. You can create blocks like !ifdef/!else/!endif, !ifdef/!else ifdef/!else/!endif etc.

!ifdef VERSION
OutFile installer-${VERSION}.exe
!else
OutFile installer.exe
!endif

Command introduced with NSIS v1.2