Steps for usage Step 1. Select the species to be detected in the Species column.Step 2. In the Modification column, you can choose the type of modification site. The 'all' option represents all modification sites by default.Step 3. The Threshold option contains three options: namely Low, Normal and High represent the strictness of the XGboost model. Their corresponding specificity values can be found in Supplementary Tables S11Step 4. Enter at least 50 bp RNA sequences in Fasta format. Click the Example button and a reference case will appear. After clicking the Submit button to submit the sequence, the results will pop up automatically after the server calculates the results.