• NVL-len — Wrapper for strlen to get string length • NVL-up — Uppercases strings using strcase for case-insensitive operations • NVL-trim — Trims leading and trailing spaces from a string without using vl-string-trim • NVL-strcmp — Lexicographic string compare (case-sensitive) returning -1, 0, or 1 • NVL-cicmp — Case-insensitive comparator built on NVL-strcmp and NVL-up • NVL-sort — Insertion sort utility that sorts a list using a comparator function symbol • NVL-filter — Filters a list by predicate function symbol, returning only items that match • NVL-pos — Returns zero-based index of an item in a list or nil if not found • NVL-any — Returns T if any element in a list satisfies the predicate function • NVL-replace-char — Replaces all occurrences of one character in a string with another • NVL-parse-indexes — Converts list_box selection string (space/comma separated) into a list of integers • NVL-del-view — Safely deletes a named view by name via ActiveX (vla-item / vla-delete) • NVL-zoom-view — Zooms to a named view using Document.ActiveViewport.SetView and reapplies viewport • NVL-fill-list — Populates the list_box with the current filtered view list and updates the count label • NVL-apply-filter — Applies the current filter text and case-match setting to update viewFiltered and the UI • NVL-rename-at-index — Renames a view at a specific filtered index, checks for name conflicts, runs RENAME, and refreshes lists • *error* — Global error handler that reports errors (except cancel/exit), unloads dialog, deletes temp DCL, and exits cleanly