You can make words ‘*bold*’, ‘/italic/’, ‘_underlined_’, ‘=verbatim=’ and ‘~code~’, and, if you must, ‘+strike-through+’. Text in the code and verbatim string is not processed for Org specific syntax; it is exported verbatim.
To turn off fontification for marked up text, you can set
nil. To narrow down the list of
available markup syntax, you can customize
Sometimes, when marked text also contains the marker character itself, the result may be unsettling. For example,
/One may expect this whole sentence to be italicized, but the following ~user/?variable~ contains =/= character, which effectively stops emphasis there./
You can use zero width space to help Org sorting out the ambiguity. See Escape Character for more details.