+ifneq "$(PRERELEASE)" "" set Iversion $(PRERELEASE):r$(revision)
+ifneq "$(PRERELEASE)" "" set Iname PuTTY pre-release $(PRERELEASE):r$(revision)
+ifneq "$(PRERELEASE)" "" set Ivertext Pre-release $(PRERELEASE):r$(revision)
+ifneq "$(PRERELEASE)" "" set Ifilename putty-$(PRERELEASE)-pre$(revision)-installer.exe