|''text'' |Any string |none |The default, highlighted text a user sees in the Tweet web intent |
|''hashtags'' |A comma-separated list of hashtags |none |A list of hashtags to be appended to default Tweet text where appropriate |
|''align'' |"left", "right" |locale dependent (left or right, depending on the text direction of the language) |The alignment of the button within an iframe; use this to ensure flush layout when aligning buttons |
|''size'' |"medium", "large" |medium |Size of button |
|''lang'' |An ISO 639-1 language code |en |The language in which to render a widget, if supported |
|''dnt'' |"true", "false" |false |Enable Do Not Track for this widget |
|''related'' |Any comma-separated list of valid Twitter screen names |none |A list of Twitter screen names to be suggested for following after a Tweet or Tweet action is posted |
|''via'' |Any valid Twitter screen name |none |A Twitter user mentioned in the default Tweet text as via @user where appropriate |
