The Trees Program for Licensed Users
Trees is a program (© Sean Crist and Anthony Kroch) that supports
Trees is a Windows program that also runs on a Macintosh (OS X 10.5 and above) inside a Wineskin
wrapper. Trees will also run under Linux in the Wine environment, though not as a double-clickable
- the drawing of syntactic trees for insertion into word processing documents.
- the creation of software exercises to help students learn the basics of syntactic structure and
Trees was developed under a grant from the University of Pennsylvania School
of Arts and Sciences Instructional Computing Development Fund and is used at Penn in
Linguistics 250 and Linguistics 550. It is also available under license to
students and faculty in more than a dozen linguistics departments in the United States and in other
If you are a student affiliated the University of Pennsylvania or a licensed department,
you may download the Player version of Trees 3. As exercises are
assigned in your courses, the associated Trees grammars are made available by your instructors.
- To download the Trees 3 Player,
- If you are installing the Trees Player on a Windows computer, decompress the downloaded file by
double-clicking on it. Tell the program to unzip its files and let it install them in the default location.
If prompted, type in the password you were sent via email or given as part of your site license.
Once the program is installed, double-clicking on its icon will launch it.
- If you are installing the Player on a Macintosh computer, do not decompress the file. Instead,
follow the directions below. Also, make sure that your browser doesn't automatically decompress the file as
it is being downloaded.
- After downloading the Trees Player, download the Mac OSX wrapper (Wineskin) for the Trees 3
Player by clicking here.
- Decompress the wrapper file only and place both the downloaded still-compressed
Player program and the decompressed wrapper in your Applications folder.
- Drag the Trees Player file icon onto the wrapper file icon. If asked whether to allow network connections,
click on "Deny."
- Tell the program to unzip its files and let it install them in the default location. If prompted,
type in the password you were sent via email or given as part of your site license.
- Once the program is installed in the wrapper, it will shut down. To launch it, double-clicking on the wrapper
- To install the tree drawing tool for Trees 3, first download it by
Then move the downloaded tool to the Trees 3.1 folder inside the Program Files folder on your hard drive. To find
this folder on a Macintosh, right-click (or hold down the control key while clicking) on the Trees Player tree icon
and select "Show Package Contents" in the popup menu. Then double-click on the drive_c folder to reveal the Program
Folder, into which you can drag the drawing tool file.
- To download a guide to using the Trees Player, click here.
Instructors in licensed departments who wish to use the full version of Trees 3
should contact the faculty member in their department who holds the site
license copy of that program.
[Main trees page |
Tony Kroch's home page
| Penn Linguistics home page ]