Arrow annotation draws an arrow on the document.
API usage There are steps that usage of GroupDocs.Annotation Cloud consists of:
Upload input document into cloud storage and other files, like image annotation (using File API) Add annotation(s) Download document with annotations (using File API) HTTP POST ~/annotation/add Swagger UI lets you call this REST API directly from the browser.
cURL example Linux/MacOS/Bash # Get JSON Web Token # Place your client credentials in the environment variables CLIENT_ID and CLIENT_SECRET.... page_number = 0 a1 . pen_color = 1201033...box . height = 100 $a1 . page_number = 0 $a1 . pen_color = 1201033...