x1 uses language / language feature / complete language / language dialect or variation / dictionary / semantics / other language standard or specification or open source fork x2 for text / purpose / to express / communicate x3; x1 is using / declaring language / language extension x2.
A fu'ivlization of baupli, especially suited for the purpose of language declarations, e.g. with (or without) sei. This can be used to specify a language dialect, feature, variaton, or complete standard, optionally with precision; analagous to Haskell LANGUAGE pragma declarations and gcc -std standard specifications. Example: «sei baunpli be la vajli'epoitau mi ca tcidu fi la bangu lojbo mulno» (＝＝ «co'i'e'au'i mi ca tcidu fi la bangu lojbo mulno»).