--- a/doc/interpreter/tips.txi
+++ b/doc/interpreter/tips.txi
@@ -275,7 +275,7 @@
 
 As noted above, documentation is typically in a commented header block
 on an Octave function following the copyright statement. The help string
-shown above is an unformated stringed and will be displayed as is by
+shown above is an unformatted string and will be displayed as is by
 Octave. Here are some tips for the writing of documentation strings.
 
 @itemize @bullet
@@ -518,7 +518,7 @@
 @@end example
 @@end ifinfo
 
-If @@var@{n@} is a vector generate all combinations of the elements
+If @@var@{n@} is a vector, this generates all combinations of the elements
 of @@var@{n@}, taken @@var@{k@} at a time, one row per combination. The 
 resulting @@var@{c@} has size @@code@{[nchoosek (length (@@var@{n@}), 
 @@var@{k@}), @@var@{k@}]@}.