Selecting the input method

By default, TeXmacs will attempt to evaluate the input field when pressing return. Multiline input can be created using S-return. Alternatively, when selecting the multiline input mode using Session→Input mode→Multiline input, the return key will behave as usual and S-return may be used in order to evaluate the input field. Notice finally that certain systems admit built-in heuristics for testing whether the input has been completed; if not, then the return may behave as usual.

Certain applications allow you to type the mathematical input in a graphical, two dimensional form. This feature can be used by selecting Session→Input mode→Mathematical input. If this feature is available, then it is usually also possible to copy and paste output back into the input. However, it depends on the particular application how well this works.