typos in Help files

doc/help/Echo

@@ -24,7 +24,7 @@ for
   como %n;echo "
 
 This alias could be used like this:
-  note Finish report for saturday!
+  note Finish report for Saturday!
 
 [No closing quote is necessary.]
 

doc/help/GSBuff

@@ -4,7 +4,7 @@ gsbuff -- examine or set sizes of IIgs serial port buffers
 syntax:  gsbuff <portnum> [-i <integer>] [-o <integer>]
 
 ex:      gsbuff 1           --shows printer buffer info
-         gsbuff 2           --shows moddem buffer info
+         gsbuff 2           --shows modem buffer info
          gsbuff 1 -o 20000  --sets printer output buffer size
                               to 20000 bytes
          gsbuff 2 -i 65535  --sets modem input buffer size to
@@ -16,7 +16,7 @@ is used for a printer and port 2 is used for a modem).
 
 You should turn on buffering in the control panel (under
 Printer Port or Modem Port) before setting up buffers with
-'gsbuff'.  (When you do this, the ROM allocates bufers that
+'gsbuff'.  (When you do this, the ROM allocates buffers that
 are only 2048 bytes long.)
 
 Use -i to set the input buffer size and -o to set the
@@ -31,7 +31,7 @@ your system (rather than "PR#n" from BASIC or "boot -sn"
 from Davex).  This will insure that the ROM does not try
 to use a buffer that is no longer present.
 
-NOTE:  Printer buffering has very limited usefullness with
+NOTE:  Printer buffering has very limited usefulness with
 the current Apple IIgs ROM (version 01; see 'deschw'), since
 the ROM empties your printer buffer whenever something new
 is printed.  If you are willing to always wait until your

doc/help/Type

@@ -8,7 +8,7 @@ ex:      type this
          como that;type this -l
 
 Types contents of a file (any type, not just TXT).  Wildcards are 
-allowed.  -h generates a headergiving the date/time the file was last 
+allowed.  -h generates a header giving the date/time the file was last 
 modified.  -f disables filtering of control characters; normally they 
 are filtered out.