Unit Number Filter is designed to tell system only replace the specified No. of matched pattern.
For example, user can tell system only replace first 10 matched pattern by filling 1..10 in Unit Number Filter.
For advanced usage, please refer to Range Definition
How does system decide the No. of each matched text:
If Replace Scope is "All Text", the first matched text will be No. 1, the second will be No.2, and so on.
If Replace Scope is "Paragraph", the first matched text within each Paragraph will be No. 1, the second will be No.2, and so on.
If Replace Scope is "Line" or "Line of Paragraph", the first matched text within each Line will be No. 1, the second will be No.2, and so on.