Only the |Name and |Image parameters are mandatory. However, |Use={{FIAV#Usage symbols}} is required for the |Symbol parameter. (xem #Ví dụ).

Tổng quát

NameName of entity.ArticleTerm to include before name of entity, e.g. the.Image_sizeSize of images to use in infobox; if not specified, default is 300x150px.

Flag-specific

Each of these fields can be given a suffix from 2 to 6 in order to specify up to 6 variants (war flags, naval ensigns, air force ensigns, alternative civil flags, etc.) of the national flag, in addition to the main (non-suffixed) version considered the national flag. For an example, see Flag of Morocco. All of the following parameters are optional with the exception of |Image. However, |Use={{FIAV#Usage symbols}} is required for |Symbol. (xem #Ví dụ).

ImageFilename excluding hình: or Tập tin: prefix.ImagetextCaption for the image.NoborderLeave this field blank to display image with border by default for rectangular flag. For non-rectangular flag, type no.NicknameName of the flag.MorenicksMore names of the flag, separated by commas.Use6-bit FIAV usage code (see {{FIAV#Usage symbols}}). Required for |Symbol.SymbolOne or more IFIS symbols, e.g. [[Tập tin:IFIS Sinister.png|Obverse side of flag]] or {{FIAV|sinister}}. A list of these symbols can be seen at Glossary of vexillology#Other symbols or {{FIAV#Property symbols}}. |Use={{FIAV#Usage symbols}} is required.Proportionwidth:length, e.g. 2:3.AdoptionDate on which the flag was adopted.DesignConcise description of the design.AltAlt text for the image, for visually impaired readers. See Wikipedia:Alternative text for images. If omitted or empty, the |Design parameter should contain a suitable description, or there should be nearby text in the article that describes the image.DesignerName of person(s) who designed the flag.