Reference

Extracts a portion of a string by start position and optional length, returning the resulting substring.

Returns the sum of the numeric values in a node-set or sequence, or a specified zero value for empty sequences.

Returns the value of a named XSLT system property such as the XSLT version, vendor name, or vendor URL.

Splits a string into a sequence of substrings using a regular expression as the delimiter pattern.

Replaces characters in a string one-for-one using a from/to mapping, or removes characters that appear in 'from' but have no corresponding character in 'to'.

Returns the boolean value true. Used in XPath expressions and xsl:if tests where an unconditional true value is needed.

Returns the URI of an unparsed entity declared in the DTD of the source document, given the entity's name.

Returns true if unparsed-text() would succeed for the given URI and encoding, allowing safe guarded file reads.

Reads a text file from a URI and returns its lines as a sequence of strings, one item per line.

Reads a plain text file from a URI and returns its contents as an xs:string, with optional encoding specification.