In ODOO, if the signature line or "DRAW line" is too small to sign, there are a few things you can do to resolve the issue.

1. Zoom in: You can zoom in on the signature line by using the zoom feature in your browser or PDF viewer. This will make the signature line larger, making it easier to sign.

2. Increase the size of the signature line: You can increase the size of the signature line by adjusting the settings in ODOO. You can do this by going to the form or view where the signature line is located, and then using the layout editor to adjust the size of the signature field.

3. Use an electronic signature: Instead of signing the document physically, you can use an electronic signature feature in ODOO. This allows you to sign the document digitally, and eliminates the need for a physical signature.

4. Request a new document: If none of the above options work, you can contact the person who sent you the document and ask them to create a new document with a larger signature line.

5. Use a drawing tool: You can use a drawing tool, like a stylus or a finger, to sign the document. This is particularly useful for touch screen devices.

Please note that above options are general and depend on the context, as well as the version of Odoo you are using.