Catma (Computer Aided Textual Markup and Analysis) is a digital tool designed to aid in the detailed analysis and annotation of textual data. It provides users with a platform to apply customizable tags and markup to texts, facilitating the study of language patterns, structures, and other literary elements. Catma is primarily used in the fields of digital humanities and linguistics for activities such as text annotation, literary analysis, and qualitative data evaluation. The tool offers a user-friendly interface that supports collaborative work among researchers and academics.