diff --git a/doc/extcap.adoc b/doc/extcap.adoc
index 0874dab6c4..511a59cc48 100644
--- a/doc/extcap.adoc
+++ b/doc/extcap.adoc
@@ -69,10 +69,12 @@ Argument type for UI filtering for raw, or UI type for selector:
     integer
     unsigned
     long (may include scientific / special notation)
-    float
+    double
+    string (display a textbox)
     selector (display selector table, all values as strings)
     editselector (selector table which can be overridden, all values as strings)
     boolean (display checkbox)
+    booleanflag (display checkbox)
     radio (display group of radio buttons with provided values, all values as strings)
     fileselect (display a dialog to select a file from the filesystem, value as string)
     multicheck (display a textbox for selecting multiple options, values as strings)