Support tools for software development are out of scope of this subclause and covered by EN 50128.<br>Tools should be selected in accordance with needs related to development or manufacturing activities relating to system software/hardware. The selected tools should be able to cooperate. In this context, tools cooperate if the outputs from one tool have suitable contents and format for automatic input to a subsequent tool, thus minimizing the possibility of introducing human errors in the reworking of intermediate results.<br>The availability of suitable tools to supply their services over the whole lifetime of the system should be considered.<br>Additionally, for those tools that can directly affect safety, the following requirements apply:
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