The most common and most likely answer to this crossword clue is the 8 letter word BOOKMARK
I've seen this crossword clue in Financial Times
B
O
O
K
M
A
R
K
More clues leading to the result BOOKMARK
- On internet it helps to find reserve currency of past
- Aid for reading part of Bible
- Link arrest to Matthew’s follower
- Gospel, perhaps – one to retain URL of?
- It helps to know one’s place when one returns to work
- Reserve currency no longer used — reminder placed in work
- Reserve assessment to keep ones place
- Arrest victim and note address
- I’ll show you where you are in Reading
Buddy explains!
The straight part
We know that "to retain URL of" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to retain url of = bookmark.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOOKMARK mean?
BOOKMARK noun- A strip of material used to mark a place in a book.
- A record of the address of a file or Internet page serving as a shortcut to it.
- A pointer found in a nonclustered index to a row in a clustered index or a table heap
- To create a bookmark.