Server - the name of the server that the query will be sent, the entry can FQDN, NetBIOS name, IP address and can include port number <servername:port>
BasedDN - specifies the base distinguished names, in RFC1779 format
Filter - the LDAP filter that will be passed to the server. The background of the field will turn red if the filter is invalid.
Attributes - the attributes to be returned by the query
Favorites - used to select and saved favorites. See Favorites
Display Filter - define a display filter which will be applied the results returned by the server. See Display Filters
Sort - specify the sort order the server should return the results
Filename - specifies the name of the output file

Display Options

Display Results – When deselected the results of the query are not displayed in either the table or text views.
Display DN – A DN field is added to the output which contains the distinguishedName of the object.  If a DN or distinguishedName field is not added to the table view, then Show Attributes, AD Properties, and Meta Data options will not be available on the context menu.
Display on completion – when selected the screen updates are suppressed while the query is running and results are only displayed once the query has finished.
Attribute count only -  when selected the number of entries per attribute is displayed.
Hex Dump -  this option is display an hex dump of the data in the displayed attributes, with the table view enabled on the hex values are displayed.  With the table view disabled both the hex and text are included in the dump.
Raw Format – With this option selected the attribute decodes are disabled and the outputs are displayed based on the default format returned by the LDAP server.
Single Line – When selected, the entries for attributes with multiple entries are displayed on a separate line and a count is displayed after the attribute tag.  With the table view enabled, the additional entries are displayed on a new line in the table.
Output to file – with this option select the output of the queries is saved to the file specified in the filename field.
No Attribute tags – by default the name of the attribute is displayed in the text output pane, however if this option is selected the attribute name\tag is not displayed.

Server Side Controls

This section will append one or more server controls with the query sent to the server.  There both are predefined and manually defined server side controls options.
Paged Searches – enables the paged search control details here https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/1b4a637c-c682-4b5e-9397-fe9142a38887
Extended DN – control will cause the server to return the extended dn as described here https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/57056773-932c-4e55-9491-e13f49ba580c
Attribute Scope Query – this is used to the search the object specified in an Object(DS-DN) syntax attribute, the attribute is associated to the object specified in the BaseDN field.  The attribute to be used is specified as the first attribute listed in the attributes field, the subsequent attributes are the attributes to be returned. See ASQ  Details of the control can be found here https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/77d880bf-aadd-4f6f-bb78-076af8e22cd8
Delete Objects – when this control is enabled the Deleted objects container and its contents are returned.
Recycle Object – when this control is enabled the Recycled objects container and its contents are returned.
NTSecurityDescriptors – with this control enabled the server will also return the security descriptior for the object contained in the NTSecurityDescriptor attribute
Include SACL – this option will also include the Security Access Control List in the NTSecurityDescriptor details, this required the SESecurityLog right
Search Stats – When enabled the server will return the  server statistics on the query.
Controls - Provides the ability to set manually defined controls, this option allows you to specific additional server side controls. See LDAP Server Controls

Table View Options

Table View – when this option is enabled the table view is enabled and the results are presented in a tabular view
Enabled Tabs – when selected each time a query is run the output is displayed on a new tab.
Clear Table – when enabled the table view is clear of contents before the query is run
Table Input – This options enable input mode which allows inputs to be pasted into the table and then used as the basis of queries, see LDAP Search Input Mode
Record Count – (available in input mode) when this option is enabled, the number of entries per attribute is returned
Create Multiple – (available in input mode) when enabled if multiple entries are returned, the subsequent entries are displayed on a new line
CSV file format, allow you to control the format of the data written to the file, CSV is only available with table view enabled.

Misc Options

CLDAP – when enabled the ldap query is sent using the UDP protocol rather than TCP
Dynamic and Sort option – see Dynamic and Sort Attributes Options
Auto Complete – when this option is enabled NetTools will download the complete list of attributes defined in the schema when the populate button is pressed, this is then used to provide a auto complete as you enter the attribute names in the attributes field
Chase Referrals – With this LDAP option enabled, the server will try to retrieve the requested object if the object is in a different context or directory.  This can also be set in the LDAP Session option dialog
Ext Error – this is return the extended LDAP error information in the event of an error occurring
Page Size – this define the number of entries that will be returned by the server per page
Limit Records - defines the maximum number of records that will be displayed by the query, zero means that there is no limit

Updates

These options are covered in the LDAP Search Update Queries

Connection Options