When using Toolbox for your project, you usually have a number of predefined markers to choose from. The predefined set is called the MDF (Multi-Dictionary Formatter). It is very advisable to use them, so that working with your lexicon is easier for people not that familiar with your project. It is simply a question of uniformity and comparability between different lexica. Naturally, as your project might consists of definitions of markers specific only to your lexicon, it might not always be possible to use the predefined markers for all the elements.
It will more often be the case that you will actually not make use of some markers from the predefined list, rather then add some of your own. In that case, when importing your data into LEXUS, it is advisable to erase those markers that you are not using from the list of markers in Toolbox. Simply, keep in your .typ structure file only markers that you actually make use of.
If you decide to include a marker in your project that you define on your own, make sure that it has not only a symbol (e.g..typ file into LEXUS. Although LEXUS will recognize these markers, they will be included in the structure without names. If there are many of such markers, it might be difficult later to find out what the nameless markers are supposed to stand for. If this happens, however, you can always turn to the LEXUS technical group to help you solve this problem.), but also a name (e.g. ). It is also highly advisable to give descriptions to your markers, especially if you have introduced some new markers, potentially unknown to others. Giving a name to your markers is not only a practical idea, but it is necessary for the import of the