To make any changes to a database you must first unlock it:

• Click on the Allow editing rows button which has a picture of a lock on it.
• Once this button has been selected the Delete Rows, New Row, and Update DB buttons will become activate.

To delete rows

• Select the row(s) by clicking on the row numbers. A range of rows can be selected by holding the shift key and clicking a non-contiguous set of rows can be selected by holding down the control key.
• Click the Delete Rows button.

To insert a new row

• Select a row.
• Click on the New Row button. A new row will be inserted underneath the selected row.
• Click Update DB

To edit strings and numbers in a row

• Double click on the cell you wish to edit and then enter a new value.
• Click Update DB

To edit a chemical (2D sketch):

• Right click on the cell and select Edit Molecule
• Make changes using the Molecular Editor
• Click Update DB