Info-Request (DAMSL): Introduces an obligation for the hearer to provide information.
WH-Question (DIT): S wants to know which elements of a given set have a given property; S believes that at least one element of that set has that property; S believes A to know which elements of a set have that property.
QUERY-W (HCRC MapTask): A QUERY-W is any query not covered by the other categories.  Although most moves classified as QUERY-W are wh-questions, otherwise unclassifiable queries also go in this category. This includes questions that ask the partner to choose one alternative from a set, as long as the set is not yes and no. Although technically the tree of coding distinctions allows for a CHECK or an ALIGN to take the form of a wh-question, this is unusual in English.  In both ALIGN and CHECK moves, the speaker tends to have an answer in mind, and it is more natural to formulate them as yes-no questions.  Therefore, in English all wh-questions tend to be categorized as QUERY-W. It might be possible to subdivide QUERY-W into theoretically interesting categories rather than using it as a “wastebasket”, but in the Map Task such queries are rare enough that subdivision is not worthwhile. 
Question (LINLIN): User obtains information from the system.
WH-Question (SWBD-DAMSL): Wh-interrogative questions.  These must have subject-inversion. “Echo-questions” with wh-in-place are considered “declarative questions”.
WHQ (TRAINS): S asks a wh-question, trying to determine the value of some term in a proposition.