The data retrieve function of Linodef Buttons API filters the parameter for the element type you entered as you created the editors button. The following list shows the supported element types as well as the elements that the buttons API returns:
view_viewname
Terms from a term view, nodes from a node view and fields from a node view with CCK fields. The CCK field with the lowest weight (first CCK field in views field list) is used. You may also select a certain view display and arguments by typing view_viewname-display-arguments. E.g. view_taxonomy_term-feed-2, where feed is the display and 2 is the argument (vocabulary id in this case).
fieldname
The values of all fields with that name as well as the title of the corresponding node in brackets, i.e. Fieldname (Node title). See supported field types.
content type
The titles of all the nodes of this content type.
vocabulary ID
All taxonomy terms that are part of the vocabulary. Heed that the vocabulary ID has to be entered as a string like the other elements though it only consists of digits.
"getallviews"
The titles and Linodef tags of all views. This should be used only in an editor dedicated for the site administrators.
Security advices
If the current user has no access to some nodes those won't appear in the button list. This works at least with the default Drupal access management. If you are using contributed modules that alter the default access management and override node_access() by accident they could cause unintended results (e.g. not all nodes appear in the button list). When this happens please post this at the Linodef issue queue and include at least the name of the module and a short description of the symptoms.