diff --git a/Doc/sphinx/scriptref/bitmaps.rst b/Doc/sphinx/scriptref/bitmaps.rst
index 9c212a3..eec1e70 100644
--- a/Doc/sphinx/scriptref/bitmaps.rst
+++ b/Doc/sphinx/scriptref/bitmaps.rst
@@ -207,6 +207,7 @@ FastDrawClear
 
     procedure FastDrawClear(bmp : integer; Color : TColor);
 
+Draw *Color* on every pixel on the bitmap.
 
 FastDrawTransparent
 -------------------
@@ -247,6 +248,7 @@ CopyClientToBitmap
 
     procedure CopyClientToBitmap(bmp, xs, ys, xe, ye: Integer);
 
+Copy client area *xs, ys, xe, ye* to specified bitmap.
 
 BitmapFromClient
 ----------------
@@ -255,6 +257,7 @@ BitmapFromClient
 
     function BitmapFromClient(const xs, ys, xe, ye: Integer): Integer;
 
+Create a bitmap from the client. Area specified by *xs, ye, xe, ye*.
 
 SetBitmapName
 -------------
@@ -263,6 +266,8 @@ SetBitmapName
 
     procedure SetBitmapName(Bmp : integer; name : string);
 
+Assign a name to the bitmap. Mainly for debugging purposes. (It will write the
+name of the bitmap if it hasn't been freed.)
 
 FindBitmap
 ----------
@@ -439,6 +444,8 @@ DrawBitmap
 
     procedure DrawBitmap(Bmp: Integer; Dest: TCanvas; x, y: Integer);
 
+Draw the bitmap to a TCanvas.
+
 
 RectangleBitmap
 ---------------
diff --git a/Doc/sphinx/scriptref/dtm.rst b/Doc/sphinx/scriptref/dtm.rst
index ba7ac44..3efa1ce 100644
--- a/Doc/sphinx/scriptref/dtm.rst
+++ b/Doc/sphinx/scriptref/dtm.rst
@@ -295,6 +295,7 @@ PrintDTM
 
     procedure PrintDTM(const DTM : TMDTM);
 
+Print the DTM contents.
 
 MDTMToSDTM
 ----------
diff --git a/Doc/sphinx/scriptref/files.rst b/Doc/sphinx/scriptref/files.rst
index 403d551..6a7641f 100644
--- a/Doc/sphinx/scriptref/files.rst
+++ b/Doc/sphinx/scriptref/files.rst
@@ -1,6 +1,11 @@
 Working with Files
 ==================
 
+Files in Simba are all *integers*, internal handles for Simba which on their
+turn point to operating system files. Functions like CreateFile and OpenFile
+return a file handle. You should not forget to close these when you no longer
+need them.
+
 CreateFile
 ----------
 
@@ -8,6 +13,8 @@ CreateFile
 
     function CreateFile(const Path: string): Integer;
 
+Create a file with *Path*. Raturns -1 on failure, otherwise returns the handle
+to the file.
 
 OpenFile
 --------
@@ -16,6 +23,9 @@ OpenFile
 
     function OpenFile(const Path: string; Shared: Boolean): Integer;
 
+Opens file for reading. Opens shared if *Shared* is true.
+Returns -1 on failure, otherwise returns the handle to the file.
+
 
 RewriteFile
 -----------