OpenDocument Master Document Template (.otm)
The OTM (OpenDocument Master Document Template) file extension is used in conjunction with the OpenDocument format to create master documents that contain multiple subdocuments. It provides a standardized way to manage and organize complex documents by linking various components into a single master file. Introduced as part of the OpenDocument format, OTM files facilitate consistency and ease of editing across related documents. This format is widely supported by applications like OpenOffice.