diff --git a/mc_work/dorun.go b/mc_work/dorun.go
index 1b6a384a81ae92e6b249b5b41024ac9d274c2408..cd600b62acabbf954862a3e806524bd73c492bb8 100644
--- a/mc_work/dorun.go
+++ b/mc_work/dorun.go
@@ -106,7 +106,8 @@ Please run the program from somewhere other than %s`
 	return nil, fmt.Errorf(existErr, err) // The file exists..
 }
 
-// setupRun does things like get the cooling rate, seed the random numbers.
+// setupRun does things like get the cooling rate, seed the random numbers,
+// open files for writing output.
 func setupRun(mcPrm *McPrm, cprm *cprm) error {
 	var err error
 	cprm.rand = rand.New(rand.NewSource(int64(getSeed())))
diff --git a/ui/input_tab.go b/ui/input_tab.go
index 64b074a9af302ac24a92cd1412067ae0f71261a3..8f0a3255b7603c1919583856b94c5c8bed0a334e 100644
--- a/ui/input_tab.go
+++ b/ui/input_tab.go
@@ -21,7 +21,7 @@ import (
 	"example.com/ackley_mc/mc_work"
 )
 
-// startrun is what happens when you click on the form's button to start
+// startrun is called when you click on the form's button to start
 // a calculation.
 func startrun(genParams genParams, form *widget.Form, mcPrm *mcwork.McPrm) {
 	form.Disable()
@@ -164,7 +164,6 @@ func getmcprm(rd fyne.URIReadCloser, err error, genParams genParams, reload func
 }
 
 // rdwork is called after the file open dialog gets "OK"
-//func rdwork(mcPrm *mcwork.McPrm, parent fyne.Window, reload func()) {
 func rdwork(genParams genParams, reload func()) {
 	getter := func(rd fyne.URIReadCloser, err error) {
 		getmcprm(rd, err, genParams, reload)
@@ -176,7 +175,7 @@ func rdwork(genParams genParams, reload func()) {
 			t.SetLocation(y) // If there was an error, we just use default location
 		}
 	}
-	t.Show() // set an error and see if anybody notices
+	t.Show()
 }
 
 // mcWrap is run in the background so the interface does not block.