* **addFlagsSince**(<_mixed_ >source, <_mixed_ >flags, <_string_ >modseq, <_function_ >callback) - _(void)_ - Adds flag(s) to message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `flags` is either a single flag or an _array_ of flags. `callback` has 1 parameter: <_Error_ >err.
* **delFlagsSince**(<_mixed_ >source, <_mixed_ >flags, <_function_ >callback) - _(void)_ - Removes flag(s) from message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `flags` is either a single flag or an _array_ of flags. `callback` has 1 parameter: <_Error_ >err.
* **delFlagsSince**(<_mixed_ >source, <_mixed_ >flags, <_string_ >modseq, <_function_ >callback) - _(void)_ - Removes flag(s) from message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `flags` is either a single flag or an _array_ of flags. `callback` has 1 parameter: <_Error_ >err.
* **setFlagsSince**(<_mixed_ >source, <_mixed_ >flags, <_function_ >callback) - _(void)_ - Sets the flag(s) for message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `flags` is either a single flag or an _array_ of flags. `callback` has 1 parameter: <_Error_ >err.
* **setFlagsSince**(<_mixed_ >source, <_mixed_ >flags, <_string_ >modseq, <_function_ >callback) - _(void)_ - Sets the flag(s) for message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `flags` is either a single flag or an _array_ of flags. `callback` has 1 parameter: <_Error_ >err.
* **addKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_function_ >callback) - _(void)_ - Adds keyword(s) to message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.
* **addKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_string_ >modseq, <_function_ >callback) - _(void)_ - Adds keyword(s) to message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.
* **delKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_function_ >callback) - _(void)_ - Removes keyword(s) from message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.
* **delKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_string_ >modseq, <_function_ >callback) - _(void)_ - Removes keyword(s) from message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.
* **setKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_function_ >callback) - _(void)_ - Sets keyword(s) for message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.
* **setKeywordsSince**(<_mixed_ >source, <_mixed_ >keywords, <_string_ >modseq, <_function_ >callback) - _(void)_ - Sets keyword(s) for message(s) that have not changed since `modseq`. `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `keywords` is either a single keyword or an _array_ of keywords. `callback` has 1 parameter: <_Error_ >err.