WikiMatrix lists a plethora of features for each wiki engine. Select a feature from the list below to get some in-depth description and feel free to improve the documentation
Right-to-left scripts such as Hebrew and Arabic require the right CSS properties. If the entire wiki is right-to-left, you probably only need to set this property for the body element. If you mix left-to-right and right-to-left, however, you need more fine-grained control.
Thus:
No: Neither CSS nor text formatting rules support it, and neither can be changed.
Optional: The CSS can be modified such that the body element can be designated right-to-left. Maybe text formatting rules exist that can added to designate different sections as right-to-left (usually inserting an appropriately styled DIV element).
Plugin: Provide such formatting rules or CSS changes via a plugin.
Yes: Both CSS and text formatting rules support it by default.
Right-to-left support is NOT CSS support. Direction should be specied in the HTML, not in the CSS - it is part of the content, not the presentation. Good support require specifing of element langauge and direction in the html. CSS may be used to control the presentation of those elements.
Because direction is implied by the language used, supporting language also automatically support direction. Language support is important for screenreaders, and may be used to filter search results.
Levels of Right-to-left support:
Here are examples from MoinMoin:
Related issues: