xxyyzz1

xxyyzz1 is an alphanumeric string frequently used as a neutral placeholder in technical documentation, datasets, and tutorials. There is no public specification or widely recognized entity associated with the name; its value lies entirely in context. The sequence follows a pattern of repeating pairs (xx, yy, zz) followed by a numeric suffix (1), which makes it easy to recognize and track in examples. Common uses include labeling a sample in a dataset, representing a version tag in mock software, or as a stand-in file name in tutorials. Because it is not standardized, its interpretation is not portable across contexts. In regex or string-processing examples, xxyyzz1 can be used to illustrate capturing groups, sorting, and validation. See also placeholder, dummy data, sample identifiers.