Update markdown files

Author: Joe7M

_build/pages/index.markdown

@@ -5,7 +5,7 @@
 > algebra functions, a built in IDE, a powerful string library, system, sound, graphic
 > commands and communication via serial or sockets along with structured programming syntax.
 
-![](../images/sb_logo_text.png){ style="display: block; margin-left: auto; margin-right: auto; padding-bottom:2em;"}
+![](../images/sb-logo_text.png){ style="display: block; margin-left: auto; margin-right: auto; padding-top:2em; padding-bottom:2em;"}
 
 [Download](pages/download.html){.LinkIndexPage} [Try online](https://smallbasic.github.io/online/sbasic.html){.LinkIndexPage}
 

_build/reference/598-file-tload.markdown

@@ -7,6 +7,8 @@ Loads a text file `file` into the array variable `var`. Each text-line is an arr
 - `0`: load into array (default)
 - `1`: load into string
 
+See TSAVE for writing variables to a file.
+
 ### Example 1
 
 ```

_build/reference/599-file-tsave.markdown

@@ -2,11 +2,11 @@
 
 > TSAVE file, var
 
-Writes the array or string `var` to the text file `file`. Each array element is a text-line in the file. Every line of the string will be one line in the text file. Use `\n` in the string to separate lines.
+Writes array, map or string `var` to the text file `file`. Each array element is a text-line in the file. Every line of the string will be one line in the text file. Use `\n` in the string to separate lines. Maps will be saved as a json string.
 
 See TLOAD for loading data from a text-file.
 
-### Example 1: Save an array
+### Example 1
 
 ```
 ' Create an array with some data
@@ -24,20 +24,50 @@ tload "myfile.txt", B
 print B                         ' Output: [1,test,2,]
 ```
 
-### Example 2: Save a string
+### Example 2: Writing maps as json data
 
 ```
-' Create a string with some data
-A = "line 1\nline 2\nline 3"
-print A                         ' Output: line 1
-                                '         line 2
-                                '         line 3 
+' Create an array with some json data
+A << {name: "Ben", age: 20}
+A << {name: "Alice", age: 22}
 
-' Save the string. This will create the file myfile.txt in
+' Save the array. This will create the file myfile.txt in
 ' the same directory as your BASIC file
 tsave "myfile.txt", A
 
 ' Load the file
 tload "myfile.txt", B
-print B                         ' Output: [line 1,line 2,line 3]
+
+' Convert B to map variable
+for element in B
+    M << array(element)
+next
+
+print M
+print M[1].age
+
+' Output: 
+' [{"age":20,"name":"Ben"},{"age":22,"name":"Alice"},0]
+' 22
+```
+
+### Example 3: Write a string
+
+```
+' Create an array with some data
+A << 1
+A << "test"
+A << 2
+print A                         ' Output: [1,test,2]
+
+' Save the array. This will create the file myfile.txt in
+' the same directory as your BASIC file
+tsave "myfile.txt", A
+
+' Load the file
+tload "myfile.txt", B, 1
+print "->"; B ; "<-"            ' Output: ->1
+                                '         test
+                                '         2
+                                '         <-
 ```