Program for building linguistic syntax trees from text. LTC (Linguistic Tree Constructor) is a free program for building linguistic syntax trees from text.

The user points and clicks their way to a syntactic analysis.

LTC is intended for quickly producing syntactic analyses of large amounts of text (think 100,000-200,000 words, or more).

The program does no analysis on its own. The user is completely free to draw the tree however he or she wishes. However, the program makes sure that the tree is a tree and not some other kind of graph.

Syntactic theories supported - Three "flavors" of trees are supported:
1. "Generic" syntax trees,
2. X-Bar syntax trees
3. RRG (Role and Reference Grammar) syntax trees (the LSC and the LSNP)

The program supports adding "labels" to nodes. These labels are userdefinable, and can be used for such things as:
1. Subject-Object-Predicate analyses
2. Rhetorical Structure Theory analyses
3. Other discourse-level analyses
4. RRG operator-projection analyses
5. etc.

Linguistic Tree Constructor Features:
1. Draw syntax trees using point-and-click
2. Supports the following linguistic levels: * Word * Phrase * Arbitrary, user-defined levels... * RRG * XBar * Text
3. Phrase-level categories are user-definable
4. Both horizontal tree views and vertical tree views are supported
5. Both tree-view and brackets-view are supported
6. Supports up to five interlinear lines at word-level
7. Interlinear lines can be switched on and off individually
8. Change colors of individual parts of the display
9. Switch bracketing on and off for constituent levels
10. Change magnification
11. Unlimited undo
12. Copy (parts of) tree to clipboard as bitmap
13. Copy to clipboard in high resolution for publication-quality tree diagrams.
14. Printing
15. Uses any font (including Unicode fonts)
16. Supports right-to-left languages as well as left-to-right
17. Import from straight text (plain text)
18. Import from word-per-record SFM interlinear text
19. ... and many more ...

The license of this software is Free, you can free download and free use this word processing software.