Enlarging the Typoscript and RTE windows in the TYPO3 backend
It could be unhandy at times to haveto work in the default sizes of the htmlArea RTE text-editor and the Typoscript constants en setup windows. This can easily be changed by modifying the backend user and the user settings.
1. Changing the size of the TYPO3 RTE
Default size of the small RTE in TYPO3..
For the RTE this can easily be changed by editing the backenduser (via the List View under the globe level). There under options you can add your desired dimensions of the small version of the RTE :
options.RTESmallWidth = 800 options.RTESmallHeight = 600
Editing the backend user to get larger RTE
After this the RTE should look like :
Much more space to conveniently type some text 
2. Changing the size of the TYPO3 Typoscript textarea windows
Not much space to code some TS in a relaxed way 
This can be adjusted by going to the User Settings under the User Tools.
Changing the TYPO3 Typoscript textarea window size
There enable the following :
- Wide document background
- Make Textareas resizable
- Make Textareas flexible
Also you can put there the max height in pixels. After that the Typoscript windows are resizable by dragging in the lower right corner of the textareas. It should look like :
A larger and resizable TYPO3 Typoscript textarea window