--- a/OSProcess.st	Wed Jan 17 13:35:40 2018 +0100
+++ b/OSProcess.st	Wed Jan 17 13:39:11 2018 +0100
@@ -116,11 +116,11 @@
     ^ self new command:aCommandString.
 !
 
-command:aCommandString inDirectory:aStringOrFilename
+command:aCommandString directory:aStringOrFilename
     "return an initialized instance to execute aCommandStirng 
      in a directory for a local process"
 
-    ^ self new command:aCommandString inDirectory:aStringOrFilename.
+    ^ self new command:aCommandString directory:aStringOrFilename.
 !
 
 new
@@ -166,7 +166,7 @@
 !
 
 command
-    "return the value of the instance variable 'command' (automatically generated)"
+    "the OS (shell-) command"
 
     ^ command
 
@@ -184,11 +184,21 @@
 !
 
 command:commandStringArg directory:stringOrFilenameArg
+    "set the command to be executed and directory, where to execute.
+     If aStringOrArray is a String, the commandString is passed to a shell for execution
+     - see the description of 'sh -c' in your UNIX manual ('cmd.exe' in your Windows manual).
+     If aCommandString is an Array, the first element is the command to be executed,
+     and the other elements are the arguments to the command. No shell is invoked in this case."
+
     command := commandStringArg.
     directory := stringOrFilenameArg.
 !
 
 command:commandArg environment:environmentArg directory:directoryArg inStream:inStreamArg outStream:outStreamArg errorStream:errorStreamArg auxStream:auxStreamArg showWindow:showWindowArg lineWise:lineWiseArg 
+    "set the command to be executed & directory, where to execute.
+     and input/output streams.
+     See comments in individual setters for more info"
+
     command := commandArg.
     environment := environmentArg.
     directory := directoryArg.
@@ -201,7 +211,7 @@
 !
 
 directory
-    "return the value of the instance variable 'directory' (automatically generated)"
+    "the directory where executed"
 
     ^ directory
 
@@ -215,7 +225,7 @@
 !
 
 environment
-    "return the value of the instance variable 'environment' (automatically generated)"
+    "the shell environment"
 
     ^ environment
 
@@ -229,8 +239,6 @@
 !
 
 errorStream
-    "return the value of the instance variable 'errorStream' (automatically generated)"
-
     ^ errorStream
 
     "Created: / 10.11.1998 / 21:26:34 / cg"
@@ -266,8 +274,6 @@
 !
 
 inStream
-    "return the value of the instance variable 'inStream' (automatically generated)"
-
     ^ inStream
 
     "Created: / 10.11.1998 / 21:26:34 / cg"
@@ -303,8 +309,6 @@
 !
 
 outStream
-    "return the value of the instance variable 'outStream' (automatically generated)"
-
     ^ outStream
 
     "Created: / 10.11.1998 / 21:26:34 / cg"