2.1.512 Part 4 Section 22.214.171.124, LINK
a. The standard does not explain the format of field-argument-1 of the LINK field.
Word has a specific format for field-argument-1 of the LINK field. This format specifies an OLE Programmatic Identifier (ProgID). This string shall not start with a digit, shall not contain any punctuation (including underscores) other than periods, and shall have a maximum length of 39 characters.
The pieces of a ProgID are separated by periods; whitespace shall not occur within the ProgID. The typical format of a ProgID is:
b. The standard says that the LINK field has no field value.
In Word, the field value of a LINK field is an OLE object representation of the linked file, or the contents of the linked file itself, depending on the switches used.
c. The standard says the \d switch will prevent the graphic data from being stored with the document.
When saving a document to OOXML, Word stores the graphic data in the file even if the \d switch is used.
d. The standard says the \f switch determines the formatting of the linked object when displayed in the document.
Word ignores the argument of the \f switch.
e. The standard does not restrict which field switches can be used with each other, even when their definitions are mutually exclusive.
If more than one switch is present from the set \b, \h, \p, \r, \t, \d, and \u, Word ignores all but the last one.