Most journal submission systems accept common file formats like PDF, Word documents, and LaTeX files for manuscripts. However, it's essential to check the specific requirements of the journal.

To withdraw a manuscript, authors typically need to log in to the system and follow the journal's withdrawal procedure, which can usually be found in the submission guidelines.

If you encounter technical problems, you should contact the journal's technical support or helpdesk. They can assist with troubleshooting and resolving any issues.

Yes, many submission systems allow authors to submit multiple manuscripts, but there may be limitations or guidelines regarding the number of submissions allowed.

Using the submission system itself is usually free. However, some journals may charge submission or publication fees, which should be outlined in the journal's guidelines.