Using the specialized name in a variable and making comments clear

- Add JSON tags for `AppProperties`, `PivotTableOption` and `PivotTableField` structure

1 files changed, 2 insertions, 2 deletions

diff --git a/picture.go b/picture.go
index 30a255d..3b6d821 100644
--- a/picture.go
+++ b/picture.go
@@ -512,8 +512,8 @@ func (f *File) GetPicture(sheet, cell string) (string, []byte, error) {
 }
 
 // DeletePicture provides a function to delete charts in spreadsheet by given
-// worksheet and cell name. Note that the image file won't be deleted from the
-// document currently.
+// worksheet name and cell reference. Note that the image file won't be deleted
+// from the document currently.
 func (f *File) DeletePicture(sheet, cell string) (err error) {
 	col, row, err := CellNameToCoordinates(cell)
 	if err != nil {