Rename DrawText to DrawTextFixSize and create DrawText

doc/manual.md

@@ -25,7 +25,12 @@ syscalls.Event.<EventName>
 
 ### Text encoding
 
+```lua
+syscalls.Encoding.<value>
+```
+
 + `cp866`
++ `cp866_8x16`
 + `utf8`
 + `utf16`
 
@@ -52,7 +57,9 @@ syscalls.textSize.<value>
 + `56x112`
 + `64x128`
 
-### `DrawText(text, xPos, yPos, textColor, textSize, textLen, backgroundColor, encoding)`
+### `DrawText(text, xPos, yPos, textColor, textScale, textLen, backgroundColor, encoding)`
+
+### `DrawTextFixSize(text, xPos, yPos, textColor, textSize, textLen, backgroundColor, encoding)`
 
 Draw text.