Fix typo and add comments

oviewer/action.go

@@ -782,7 +782,7 @@ func (root *Root) ExpandColumn(ctx context.Context, cursor int) error {
 // toggleColumnShrink shrinks or expands the current cursor column.
 func (root *Root) toggleColumnShrink(ctx context.Context) {
 	cursor := root.Doc.columnCursor
-	shrink, err := root.Doc.isColumnShink(cursor)
+	shrink, err := root.Doc.isColumnShrink(cursor)
 	if err != nil {
 		root.setMessage(err.Error())
 	}
@@ -791,8 +791,8 @@ func (root *Root) toggleColumnShrink(ctx context.Context) {
 	}
 }
 
-// isColumnShink returns whether the specified column is shrink.
-func (m *Document) isColumnShink(cursor int) (bool, error) {
+// isColumnShrink returns whether the specified column is shrink.
+func (m *Document) isColumnShrink(cursor int) (bool, error) {
 	if m.Converter != convAlign {
 		return false, ErrNotAlignMode
 	}

oviewer/oviewer.go

@@ -423,7 +423,7 @@ var (
 	// ErrEvictedMemory indicates that it has been evicted from memory.
 	ErrEvictedMemory = errors.New("evicted memory")
 	// ErrNotAlignMode indicates that it is not an align mode.
-	ErrNotAlignMode = errors.New("not align mode")
+	ErrNotAlignMode = errors.New("not an align mode")
 	// ErrNoColumnSelected indicates that no column is selected.
 	ErrNoColumnSelected = errors.New("no column selected")
 )

oviewer/prepare_draw.go

@@ -125,6 +125,7 @@ func (root *Root) setAlignConverter() {
 	}
 	m.alignConv.orgWidths = m.columnWidths
 	m.alignConv.maxWidths = maxWidths
+	// column attributes are inherited, so only the required columns are added.
 	for n := len(m.alignConv.columnAttrs); n < len(maxWidths)+1; n++ {
 		m.alignConv.columnAttrs = append(m.alignConv.columnAttrs, columnAttribute{})
 	}