The BTS is capable of checking a transliteration for errors by using system grammar rules. This does not mean that it can recognize false lemmata or transliteration errors and correct them. In fact, grammar check follows the internal logic according to which specific signs can only occur in specific combinations. It detects disagreements with this logic and marks them:
Errors can be marked by:
1) 
- sign on the left of the text;
2) a dark red rectangle on the right next to the scroll bar of the Transliteration tab. NOTE: dont mess them up with the light red rectangles, which show the location of a rubrum. Upon mouse-over on the rectangle the tool-tip will be displayed, explaining the cause of the error.
In the example above (see screen shot) a square bracket was opened, but the second one is missing. If you insert the required symbol the error message will disappear.
List of error messages and their solutions:
