cancel="0" Cancellation Button. Only valid w/ Membership Level Access. Possible values: 0 = this is NOT a Cancellation Button, 1 = this IS a Cancellation Button.
cc="USD" 3 character Currency Code. Not valid when modify|cancel="1".
ccaps="music,videos" A comma-delimited list of Custom Capabilities. Only valid w/ Membership Level Access.
custom="mycollegedesktop.com" must start with your domain. Additional values can be piped in ( ex: custom="mycollegedesktop.com|cv1|cv2|cv3|etc" ). Not valid when modify|cancel="1".
desc="Gold Membership" A brief purchase Description. Not valid when modify|cancel="1".
exp="72" Access Expires ( in hours ). Only valid when sp="1" for Specific Post/Page Access.
ids="14" A Post/Page ID#, or a comma-delimited list of IDs. Only valid when sp="1" for Specific Post/Page Access.
image="default" Button Image Location. Possible values: default = use the default Google® Checkout Button,
http://... = location of your custom Image.
level="1" Membership Level [1-4] ( or, up to the number of configured Levels ). Only valid for Buttons providing paid Membership Level Access.
modify="0" Modification Button. Only valid w/ Membership Level Access. Possible values: 0 = this is NOT a Modification Button, 1 = this IS a Modification Button.
output="anchor" Output Type. Possible values: anchor = Google® Checkout Button ( <a> anchor tag ) URL w/ ?query string, url = raw URL w/ ?query string.
ra="0.01" Regular, Buy Now, and/or Recurring Amount. Must be >= 0.01. Not valid when modify|cancel="1".
rp="1" Regular Period. Only valid w/ Membership Level Access. Must be >= 1 ( ex: 1 Week, 2 Months, 1 Month, 3 Days ).
rt="M" Regular Term. Only valid w/ Membership Level Access. Possible values: D = Days, W = Weeks, M = Months, Y = Years, L = Lifetime.
rr="1" Recurring directive. Only valid w/ Membership Level Access. Possible values: 0 = non-recurring "Subscription" with possible Trial Period for free, or at a different Trial Amount; 1 = recurring "Subscription" with possible Trial Period for free, or at a different Trial Amount; BN = non-recurring "Buy Now" functionality, no Trial Period possible.
sp="0" Specific Post/Page Button. Possible values: 0 = this is NOT a Specific Post/Page Access Button, 1 = this IS a Specific Post/Page Access Button.
ta="0.00" Trial Amount. Only valid w/ Membership Level Access. Must be 0 when rt="L" or when rr="BN".
tp="0" Trial Period. Only valid w/ Membership Level Access. Must be 0 when rt="L" or when rr="BN".
tt="D" Trial Term. Only valid w/ Membership Level Access. Possible values: D = Days, W = Weeks, M = Months, Y = Years.