Changes

'''Important note:''' All functions in this section are treated as '''updating'functions'': they are will not be immediately executed, but queued on a ''pending update list''the [[XQuery Update#Pending Update List|Pending Update List]], which is will be processed after the actual query has been evaluated. The [[XQuery Update]] page gives more insight into This means that the order in which the functions are specified in the query does usually not reflect the order in which the relevant conceptscode will be evaluated.