*repeats the group contents below any number of times:
Group 2([+]?(0|[1-9][0-9]*)([Ee][+]?[0-9]+)?\s+){2} {2}repeats the group contents below exactly 2 times:
?matches at most one character from the set below:
+the literal + (4310 / 538 / 2B16)
0the literal 0 (4810 / 608 / 3016)
2nd Alternative[1-9][0-9]* 1-9one character from 1 (4910) to 9 (5710)
*matches any number of characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
?repeats the group contents below at most once:
Ethe literal E (6910 / 1058 / 4516) (case sensitive)
ethe literal e (10110 / 1458 / 6516) (case sensitive)
?matches at most one character from the set below:
+the literal + (4310 / 538 / 2B16)
+matches at least one character from the set below:
0-9one character from 0 (4810) to 9 (5710)
\s+any whitespace character, repeated at least once
?matches at most one character from the set below:
+the literal + (4310 / 538 / 2B16)
0-4one character from 0 (4810) to 4 (5210)
Group 5(\s+(0x[0-9a-fA-F]{1,16}|[+]?(0|[1-9][0-9]*)([Ee][+]?[0-9]+)?))* *repeats the group contents below any number of times:
\s+any whitespace character, repeated at least once
Group 6(0x[0-9a-fA-F]{1,16}|[+]?(0|[1-9][0-9]*)([Ee][+]?[0-9]+)?) 1st Alternative0x[0-9a-fA-F]{1,16} 0xthe literal text 0x (case sensitive) Character Class[0-9a-fA-F]{1,16} {1,16}matches between 1 and 16 characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
a-fone character from a (9710) to f (10210) (case sensitive)
A-Fone character from A (6510) to F (7010) (case sensitive)
2nd Alternative[+]?(0|[1-9][0-9]*)([Ee][+]?[0-9]+)? ?matches at most one character from the set below:
+the literal + (4310 / 538 / 2B16)
0the literal 0 (4810 / 608 / 3016)
2nd Alternative[1-9][0-9]* 1-9one character from 1 (4910) to 9 (5710)
*matches any number of characters from the set below:
0-9one character from 0 (4810) to 9 (5710)
\s*any whitespace character, repeated any number of times
,?optionally matches the literal , (4410 / 548 / 2C16)
\s*any whitespace character, repeated any number of times