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diff --git a/README.md b/README.md
index 895ce4a..6704889 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,14 @@
 # My fledgling bash library
 
+## number functions
+    **pb_number**
+    pb_isuint
+    pb_isint
+    pb_isunumber
+    pb_isnumber
+
 ## colour functions
+    **pb_colour**
     pb_fg 0-254  set foreground colour
     pb_bg 0-254  set background colour
     pb_nc        remove coulours