diff --git a/make/projects-dir.mk b/make/projects-dir.mk
index 948e7f78..6e1fc851 100644
--- a/make/projects-dir.mk
+++ b/make/projects-dir.mk
@@ -64,6 +64,7 @@ PGIT       = CLONE_PROJECTS="$(PROJECTS)" /bin/bash $(firstword $(wildcard ./yto
 BUILD_PY   = python ./ytools/devutil/scripts/build.py -b $(shell pwd) $(BUILD_PY_EXTRA_ARGS)
 PURGE_SH   = /bin/bash $(firstword $(wildcard ./ytools/devutil/scripts/purge-stale-projects.sh /opt/ytools/bin/purge-stale-projects.sh) purge-not-found)
 RELEASE_SH = /bin/bash $(firstword $(wildcard ./ytools/devutil/scripts/build-release.sh /opt/ytools/bin/build-release.sh) release-not-found)
+BROWSER   ?= firefox
 
 # ------------ targets
   
@@ -195,3 +196,6 @@ clone.done:
 	$(PGIT) clone
 	touch $@
 
+doc-project doc-module:
+	$(BROWSER) https://janware.com/wiki/pub/sw:build:
+