Reading a text to identify errors, inconsistencies, incorrect grammar and punctuation, poor or inappropriate style, and, in the case of a translation, conformance with the source text, and making appropriate changes and corrections to the text. In general, the number of revision stages is proportional to the demands on the text quality: a translation intended for publication may, for example, be revised by the translator and by one or two third parties (e.g. the author, a subject expert, a second translator, an editor), whereas an internal memo may not require any revision after translation. (What exactly revising and editing entail and how they differ is the subject of much debate. What is important is that the person commissioning the work communicates clearly what is expected of the editor.)