Broadcast, Multicast and Intrado

^LIN[\s\S]?(?=^LIN.?)|^LIN[\s\S]* FIRST PART From the first line string of an item line --> ^LIN over line breaks --> [\s\S]*? to before (lookahead) the next line element --> (?=^LIN.*?)...

Same as "ORDERS96B MATCH ALL ITEM LINES METHOD 1" with a lazy quantifier to get multiple matches. This works only, if the last line of a item line elemet is known, otherwise try METHOD 2 From the first line string of an item line --> ^LIN over line breaks --> [\s\S]*? to the last line string of an ...

From the first line string of an item line --> ^LIN over line breaks --> [\s\S]* to before (lookahead) the first line after the whole item line string --> (?=^UNS)

From the first line string of an item line --> ^LIN over line breaks --> [\s\S]* to the last line string of an item line --> ^DTM.*

ORDERS96B Example of matching the line description of a ORDERS96B flatfile. IMD+F++:::DIN 7979 D Stahl blank | 8x30 Zylin' (?) + (?) + (?) + (? (?) : (?) : (? : (?) ) '...

[Event "Live Chess"] [Site "Chess.com"] [Date "2019.01.05"] [Round "-"] [White "ahihi3138"] [Black "gcao1"]...

matches: 1234 .0123 0.123 no matches:...

ONE reg expression to use

Basic format validation for ICD9, 10 Conditions; 3-7 characters

Basic format validation for ICD9, 10 Conditions; 3-7 characters

This is my test of an regular expression. It matches not all but maximum gmail account's syntax.