The service provider catalog is an optional part of the service discovery process.

服务提供者目录是服务发现进程中的一个可选的部件。

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The technical attributes view in WBM, as shown in Figure 5, provides an optional way to specify technical details that are used to implement a process, global task, or service on WPS.

WBM 中的技术属性视图（如 图 5 中所示）提供了一种可选的方式，用以指定用于在 WPS 上实现流程、全局任务或服务的技术细节。

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Collect Diagnostic Data: An optional step on how to use the Collect Data capability to automate the process of gathering problem determination artifacts.

收集诊断数据(Collect Diagnostic Data)：可选步骤，说明如何使用Collect Data功能来实现收集问题确定构件的流程的自动化。

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Rather than a required step in publishing, editorial is in the process of switching from an imposed step by publishers to an optional step by authors.

FORBES: If an independent author can make big money, what's the point of publishers?

An optional Linksys Smart Wi-Fi account can be created following the set-up process to provide easy control of the home network, including settings, connected devices and Smart Wi-Fi tools on virtually any device, anytime, anywhere.

ENGADGET: Linksys reveals a trio of 802.11ac WiFi routers with beamforming, and a USB adapter to match