Alias pen(W) for text

pygmt/base_plotting.py

@@ -813,7 +813,7 @@ def legend(self, spec=None, position="JTR+jTR+o0.2c", box="+gwhite+p1p", **kwarg
             lib.call_module("legend", arg_str)
 
     @fmt_docstring
-    @use_alias(R="region", J="projection", B="frame")
+    @use_alias(R="region", J="projection", B="frame", W="pen")
     @kwargs_to_strings(
         R="sequence",
         textfiles="sequence_space",
@@ -867,7 +867,7 @@ def text(
             Helvetica-Bold font. If no font info is explicitly given (i.e.
             font=True), then the input textfile(s) must have this information
             in one of its columns.
-        justify: str or bool
+        justify : str or bool
             Set the alignment which refers to the part of the text string that
             will be mapped onto the (x,y) point. Choose a 2 character
             combination of L, C, R (for left, center, or right) and T, M, B for
@@ -876,6 +876,10 @@ def text(
             input textfile(s) must have this as a column.
         {J}
         {R}
+        pen : str
+            Sets the pen used to draw a rectangle around the text string
+            (see *clearance*) [Default is width = default, color = black,
+            style = solid].
         """
         kwargs = self._preprocess(**kwargs)
 

pygmt/tests/test_text.py

@@ -131,6 +131,23 @@ def test_text_font_bold(region, projection):
     return fig
 
 
+@pytest.mark.mpl_image_compare
+def test_text_pen(region, projection):
+    """
+    Print text with thick green dashed pen
+    """
+    fig = Figure()
+    fig.text(
+        region=region,
+        projection=projection,
+        x=1.2,
+        y=1.2,
+        text="green pen around text",
+        pen="thick,green,dashed",
+    )
+    return fig
+
+
 @pytest.mark.mpl_image_compare
 def test_text_justify_bottom_right_and_top_left(region, projection):
     """