Conventions used

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Before we can proceed, we need to create our PlanetaryApp project."

A block of code is set as follows:

    //
    //  GameTile.cs
    //  Creates each of our tile images for our Tile Slider Game.
    //
    //  Created by Steven F. Daniel on 24/04/2018.
    //  Copyright © 2018 GENIESOFT STUDIOS. All rights reserved.
    //
    using UIKit;
    using SlidingTiles.Interfaces;
    using CoreGraphics;
    using System;

    namespace SlidingTiles.Classes
    {

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

    <?xml version="1.0" encoding="UTF-8"?>
    <ContentPage xmlns="http://xamarin.com/schemas/2014/forms"   
                 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
                 xmlns:maps="clr-namespace:Xamarin.Forms.Maps;assembly=Xamarin.Forms.Maps"     
                 x:Class="TrackMyWalks.Views.WalkDistancePage">
         <ContentPage.Content>
             <ScrollView Padding="2,0,2,2">
                 <StackLayout Orientation="Vertical" HorizontalOptions="FillAndExpand"    
                     VerticalOptions="FillAndExpand">
                     <maps:Map x:Name="customMap" IsShowingUser="true" MapType="Street" />
                     <Button x:Name="EndThisTrail" Text="End this Trail" 
                             TextColor="White" BackgroundColor="#008080" 
                             Clicked="EndThisTrailButton_Clicked" Margin="20" />
                 </StackLayout>
             </ScrollView>
         </ContentPage.Content>
    </ContentPage>

Any command-line input or output is written as follows:

Last login: Fri Aug 24 16:40:41 on console 
stevens-mbp:~ stevendaniel$ curl https://trackmywalk.azurewebsites.net/tables/WalkEntries 
--header "ZUMO-API-VERSION:2.0.0

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Alternatively, you can specify it for the Android platform by selecting the Android node in the SDK Locations section."

Warnings or important notes appear in a box like this.

Tips and tricks appear like this.