diff --git a/_site/content/posts/glossary.md b/_site/content/posts/glossary.md
new file mode 100644
index 00000000..5d7f07b2
--- /dev/null
+++ b/_site/content/posts/glossary.md
@@ -0,0 +1,17 @@
+---
+title: "Glossary"
+date: 2018-04-17T12:34:51-07:00
+draft: false
+---
+
+### Module
+A discreet unit of data collection and display. A data interface
+concept. A package inside the app.
+
+Examples: New Relic, Git, Weather.
+
+### Widget
+The onscreen representation of a Module. The widget is responsible for
+being the interface between the app and the data collection.
+
+Widgets are defined by a required `widget.go` file in a Module.
diff --git a/bamboohr/widget.go b/bamboohr/widget.go
index 2ac4f3da..19de8f34 100644
--- a/bamboohr/widget.go
+++ b/bamboohr/widget.go
@@ -8,6 +8,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/gcal/widget.go b/gcal/widget.go
index e862895c..ed42f376 100644
--- a/gcal/widget.go
+++ b/gcal/widget.go
@@ -10,6 +10,7 @@ import (
 	"google.golang.org/api/calendar/v3"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/git/widget.go b/git/widget.go
index 3340574c..973da71d 100644
--- a/git/widget.go
+++ b/git/widget.go
@@ -10,6 +10,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/github/widget.go b/github/widget.go
index 8ddd44f7..a501a704 100644
--- a/github/widget.go
+++ b/github/widget.go
@@ -9,6 +9,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/jira/widget.go b/jira/widget.go
index 633393eb..36a9853a 100644
--- a/jira/widget.go
+++ b/jira/widget.go
@@ -8,6 +8,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/newrelic/widget.go b/newrelic/widget.go
index c94e53a2..4b8a06f2 100644
--- a/newrelic/widget.go
+++ b/newrelic/widget.go
@@ -9,6 +9,7 @@ import (
 	nr "github.com/yfronto/newrelic"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
@@ -49,7 +50,7 @@ func (widget *Widget) Refresh() {
 		widget.View.SetWrap(false)
 		fmt.Fprintf(widget.View, "%s", widget.contentFrom(deploys))
 	}
-		
+
 	widget.RefreshedAt = time.Now()
 }
 
diff --git a/opsgenie/widget.go b/opsgenie/widget.go
index 1b7f7dd5..253c0cdf 100644
--- a/opsgenie/widget.go
+++ b/opsgenie/widget.go
@@ -9,6 +9,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/security/widget.go b/security/widget.go
index 36f2f34b..0ea8c9ef 100644
--- a/security/widget.go
+++ b/security/widget.go
@@ -8,6 +8,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/status/widget.go b/status/widget.go
index f630faa7..d919fc4f 100644
--- a/status/widget.go
+++ b/status/widget.go
@@ -10,6 +10,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/textfile/widget.go b/textfile/widget.go
index 4d2da305..5c76e60d 100644
--- a/textfile/widget.go
+++ b/textfile/widget.go
@@ -10,6 +10,7 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object
 var Config *config.Config
 
 type Widget struct {
diff --git a/weather/client.go b/weather/client.go
deleted file mode 100644
index fba36fe5..00000000
--- a/weather/client.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package weather
-
-import (
-	//"fmt"
-	"os"
-
-	owm "github.com/briandowns/openweathermap"
-)
-
-/* -------------------- Exported Functions -------------------- */
-
-func Fetch(cityids []int) []*owm.CurrentWeatherData {
-	apiKey := os.Getenv("WTF_OWM_API_KEY")
-
-	data := []*owm.CurrentWeatherData{}
-
-	for _, cityID := range cityids {
-		result, err := currentWeather(apiKey, cityID)
-		if err == nil {
-			data = append(data, result)
-		}
-	}
-
-	return data
-}
-
-/* -------------------- Unexported Functions -------------------- */
-
-func currentWeather(apiKey string, cityCode int) (*owm.CurrentWeatherData, error) {
-	weather, err := owm.NewCurrent(Config.UString("wtf.mods.weather.tempUnit", "C"), Config.UString("wtf.mods.weather.language", "EN"), apiKey)
-	if err != nil {
-		return nil, err
-	}
-
-	weather.CurrentByID(cityCode)
-
-	return weather, nil
-}
diff --git a/weather/widget.go b/weather/widget.go
index 993780d7..d76660ac 100644
--- a/weather/widget.go
+++ b/weather/widget.go
@@ -1,6 +1,7 @@
 package weather
 
 import (
+	"os"
 	"time"
 
 	owm "github.com/briandowns/openweathermap"
@@ -9,19 +10,24 @@ import (
 	"github.com/senorprogrammer/wtf/wtf"
 )
 
+// Config is a pointer to the global config object.
 var Config *config.Config
 
+// Widget is the container for weather data.
 type Widget struct {
 	wtf.TextWidget
 
-	Idx int
-	Data    []*owm.CurrentWeatherData
+	APIKey string
+	Data   []*owm.CurrentWeatherData
+	Idx    int
 }
 
+// NewWidget creates and returns a new instance of the weather Widget.
 func NewWidget() *Widget {
 	widget := Widget{
 		TextWidget: wtf.NewTextWidget(" Weather ", "weather"),
-		Idx:    0,
+		APIKey:     os.Getenv("WTF_OWM_API_KEY"),
+		Idx:        0,
 	}
 
 	widget.View.SetInputCapture(widget.keyboardIntercept)
@@ -31,17 +37,37 @@ func NewWidget() *Widget {
 
 /* -------------------- Exported Functions -------------------- */
 
+// Fetch retrieves OpenWeatherMap data from the OpenWeatherMap API.
+// It takes a list of OpenWeatherMap city IDs.
+// It returns a list of OpenWeatherMap CurrentWeatherData structs, one per valid city code.
+func (widget *Widget) Fetch(cityIDs []int) []*owm.CurrentWeatherData {
+	data := []*owm.CurrentWeatherData{}
+
+	for _, cityID := range cityIDs {
+		result, err := widget.currentWeather(widget.APIKey, cityID)
+		if err == nil {
+			data = append(data, result)
+		}
+	}
+
+	return data
+}
+
+// Refresh fetches new data from the OpenWeatherMap API and loads the new data into the.
+// widget's view for rendering
 func (widget *Widget) Refresh() {
 	if widget.Disabled() {
 		return
 	}
 
-	widget.Data = Fetch(wtf.ToInts(Config.UList("wtf.mods.weather.cityids", widget.defaultCityCodes())))
+	widget.Data = widget.Fetch(wtf.ToInts(Config.UList("wtf.mods.weather.cityids", widget.defaultCityCodes())))
 
 	widget.display(widget.Data)
 	widget.RefreshedAt = time.Now()
 }
 
+// Next displays data for the next city data in the list. If the current city is the last
+// city, it wraps to the first city.
 func (widget *Widget) Next() {
 	widget.Idx = widget.Idx + 1
 	if widget.Idx == len(widget.Data) {
@@ -51,6 +77,8 @@ func (widget *Widget) Next() {
 	widget.display(widget.Data)
 }
 
+// Prev displays data for the previous city in the list. If the previous city is the first
+// city, it wraps to the last city.
 func (widget *Widget) Prev() {
 	widget.Idx = widget.Idx - 1
 	if widget.Idx < 0 {
@@ -66,10 +94,24 @@ func (widget *Widget) currentCityData(data []*owm.CurrentWeatherData) *owm.Curre
 	return data[widget.Idx]
 }
 
+func (widget *Widget) currentWeather(apiKey string, cityCode int) (*owm.CurrentWeatherData, error) {
+	weather, err := owm.NewCurrent(Config.UString("wtf.mods.weather.tempUnit", "C"), Config.UString("wtf.mods.weather.language", "EN"), apiKey)
+	if err != nil {
+		return nil, err
+	}
+
+	err = weather.CurrentByID(cityCode)
+	if err != nil {
+		return nil, err
+	}
+
+	return weather, nil
+}
+
 func (widget *Widget) defaultCityCodes() []interface{} {
 	defaultArr := []int{6176823, 360630, 3413829}
 
-	var defaults []interface{} = make([]interface{}, len(defaultArr))
+	var defaults = make([]interface{}, len(defaultArr))
 	for i, d := range defaultArr {
 		defaults[i] = d
 	}
@@ -95,7 +137,7 @@ func (widget *Widget) icon(data *owm.CurrentWeatherData) string {
 	case "clear":
 		icon = "☀️"
 	case "clear sky":
-		icon = "☀️ "
+		icon = "☀️"
 	case "cloudy":
 		icon = "⛅️"
 	case "few clouds":
@@ -112,6 +154,8 @@ func (widget *Widget) icon(data *owm.CurrentWeatherData) string {
 		icon = "☔️"
 	case "light rain":
 		icon = "🌦"
+	case "light shower snow":
+		icon = "🌦⛄️"
 	case "light snow":
 		icon = "🌨"
 	case "mist":
diff --git a/wtf/config_files.go b/wtf/config_files.go
index 8e9b8c82..bf377f89 100644
--- a/wtf/config_files.go
+++ b/wtf/config_files.go
@@ -28,7 +28,7 @@ func LoadConfigFile(filePath string) *config.Config {
 
 	cfg, err := config.ParseYamlFile(absPath)
 	if err != nil {
-		fmt.Println("\n\n\033[1m ERROR:\033[0m Could not load '\033[0;33mconfig.yml\033[0m'.\n Please add a \033[0;33mconfig.yml\033[0m file to your \033[0;33m~/.wtf\033[0m directory.\n See \033[1;34mhttps://github.com/senorprogrammer/wtf\033[0m for details.\n\n")
+		fmt.Println("\n\n\033[1m ERROR:\033[0m Could not load '\033[0;33mconfig.yml\033[0m'.\n Please add a \033[0;33mconfig.yml\033[0m file to your \033[0;33m~/.wtf\033[0m directory.\n See \033[1;34mhttps://github.com/senorprogrammer/wtf\033[0m for details.")
 		os.Exit(1)
 	}
 
diff --git a/wtf/focus_tracker.go b/wtf/focus_tracker.go
index bb008d33..f1c44fc4 100644
--- a/wtf/focus_tracker.go
+++ b/wtf/focus_tracker.go
@@ -5,6 +5,8 @@ import (
 	"github.com/senorprogrammer/wtf/color"
 )
 
+// FocusTracker is used by the app to track which onscreen widget currently has focus,
+// and to move focus between widgets.
 type FocusTracker struct {
 	App     *tview.Application
 	Idx     int
@@ -13,16 +15,21 @@ type FocusTracker struct {
 
 /* -------------------- Exported Functions -------------------- */
 
+// Next sets the focus on the next widget in the widget list. If the current widget is
+// the last widget, sets focus on the first widget.
 func (tracker *FocusTracker) Next() {
 	tracker.blur(tracker.Idx)
 	tracker.increment()
 	tracker.focus(tracker.Idx)
 }
 
+// None removes focus from the currently-focused widget.
 func (tracker *FocusTracker) None() {
 	tracker.blur(tracker.Idx)
 }
 
+// Prev sets the focus on the previous widget in the widget list. If the current widget is
+// the last widget, sets focus on the last widget.
 func (tracker *FocusTracker) Prev() {
 	tracker.blur(tracker.Idx)
 	tracker.decrement()
diff --git a/wtf/utils.go b/wtf/utils.go
index d5f4cd11..3db7c142 100644
--- a/wtf/utils.go
+++ b/wtf/utils.go
@@ -33,7 +33,10 @@ func ExecuteCommand(cmd *exec.Cmd) string {
 		str += string(b)
 	}
 
-	cmd.Wait()
+	err = cmd.Wait()
+	if err != nil {
+		return fmt.Sprintf("%v\n", err)
+	}
 
 	return str
 }