The U nstructured O peration M arkup L anguage (UOML) OASIS Standard defines instructions to process documents, i.e., information that can be printed on paper.

Although expressed in XML, UOML is not a document format. It is an standard interface between application software and common platform
software called a DoCbase Management System (DCMS). Application software operates on the document by issuing UOML instructions to the
DCMS, then the DCMS implements operations defined by these instructions. This process is similar to a database management system (DBMS), where UOML acts in a role similar to SQL.

UOML is a universally representative operating language for the abstract description of documents, with features including document
organization, page description, information safety, index and search, content extraction, font management, a plug-in mechanism, and script
description, etc. UOML Part 1 only involves the page layout and basic document organization; the other functions will be defined in future
parts of UOML.

UOML was approved as an OASIS Standard in 2008. UOML is vendor-neutral, document-format-neutral, application-neutral, platform-neutral and programming language neutral.