), when it follows :-

This crossword clue is for the definition: ), when it follows :-.
it’s A 21 letters crossword puzzle definition.
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Possible Answers: SMILE.

Last seen on: NY Times Crossword 22 Nov 20, Sunday

Random information on the term “SMILE”:

Smile is a computer data interchange format based on JSON. It can also be considered a binary serialization of the generic JSON data model, which means tools that operate on JSON may be used with Smile as well, as long as a proper encoder/decoder exists for the tool.The name comes from first 2 bytes of the 4 byte header, which consist of Smiley “:)” followed by a linefeed: choice made to make it easier to recognize Smile-encoded data files using textual command-line tools.

Compared to JSON, Smile is both more compact and more efficient to process (both to read and write).Part of this is due to more efficient binary encoding (similar to BSON, CBOR and UBJSON), but an additional feature is optional use of back references for property names and values.Back referencing allows replacing of property names and/or short (64 bytes or less) String values with 1- or 2-byte reference ids.

Libraries known to support Smile include:

SMILE on Wikipedia